第一种：直接在applicationContext.xml中配置

    ......
    ......
<!--创建数据源 -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/test"></property>
        <property name="username" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
    ......
    ......

另外一种：配置properties文件。然后在applicationContext.xml读取，相对第一种方式，另外一种方式更为灵活。

properties文件：DbxoolConnection.properties

db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/test?
useUnicode=true&characterEncoding=UTF-8
db.user=root
db.password=root
db.alias=QZCDBPool
db.houseKeepingTestSql=select 1
db.characterEncoding=UTF-8
db.maximumConnectionCount=100
db.minimumConnectionCount=10

applicationContext.xml文件:

    ......
    ......
        <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
          <property name="locations">
            <list>
                <value> 
                classpath:DbxoolConnection.properties
                </value>
            </list>
           </property>
        </bean> 


     <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource"> 
        <property name="driver" value=http://www.mamicode.com/"${db.driver}"/>
        <property name="driverUrl" value=http://www.mamicode.com/"${db.url}"/>
        <property name="user" value=http://www.mamicode.com/"${db.user}"/>
        <property name="password" value=http://www.mamicode.com/"${db.password}"/>
        <property name="alias" value=http://www.mamicode.com/"${db.alias}"/>
        <property name="houseKeepingTestSql" value=http://www.mamicode.com/"${db.houseKeepingTestSql}"/>
        <property name="maximumConnectionCount" value=http://www.mamicode.com/"${db.maximumConnectionCount}"/>
        <property name="minimumConnectionCount" value=http://www.mamicode.com/"${db.minimumConnectionCount}"/>
        <property name="delegateProperties" value=http://www.mamicode.com/"characterEncoding=${db.characterEncoding}"/>
     </bean>    
       ......
       ......

需注意导入org.logicalcobwebs.proxool.ProxoolDataSource引用的包:proxool-0.9.1.jar